140515545021540 has 192 divisors, whose sum is σ = 430321463335680. Its totient is φ = 34049294991360.

The previous prime is 140515545021521. The next prime is 140515545021541. The reversal of 140515545021540 is 45120545515041.

It is a junction number, because it is equal to n+sod(n) for n = 140515545021492 and 140515545021501.

It is not an unprimeable number, because it can be changed into a prime (140515545021541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76912260 + ... + 78718020.

It is an arithmetic number, because the mean of its divisors is an integer number (2241257621540).

Almost surely, 2^{140515545021540} is an apocalyptic number.

140515545021540 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 140515545021540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215160731667840).

140515545021540 is an abundant number, since it is smaller than the sum of its proper divisors (289805918314140).

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

140515545021540 is a wasteful number, since it uses less digits than its factorization.

140515545021540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807342 (or 1807340 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 42.

The spelling of 140515545021540 in words is "one hundred forty trillion, five hundred fifteen billion, five hundred forty-five million, twenty-one thousand, five hundred forty".