140621213859840 has 1728 divisors, whose sum is σ = 586451442638880. Its totient is φ = 31701690482688.

The previous prime is 140621213859739. The next prime is 140621213859869. The reversal of 140621213859840 is 48958312126041.

140621213859840 is a `hidden beast` number, since 1 + 4 + 0 + 6 + 2 + 1 + 2 + 1 + 3 + 8 + 598 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a super-2 number, since 2×140621213859840² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1926317998044 + ... + 1926317998116.

Almost surely, 2^{140621213859840} is an apocalyptic number.

140621213859840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140621213859840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293225721319440).

140621213859840 is an abundant number, since it is smaller than the sum of its proper divisors (445830228779040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140621213859840 is an frugal number, since it uses more digits than its factorization.

140621213859840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 140621213859840 in words is "one hundred forty trillion, six hundred twenty-one billion, two hundred thirteen million, eight hundred fifty-nine thousand, eight hundred forty".