60021987840 has 240 divisors, whose sum is σ = 210384222048. Its totient is φ = 15812517888.

The previous prime is 60021987833. The next prime is 60021987841. The reversal of 60021987840 is 4878912006.

60021987840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (60021987841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1896627 + ... + 1928013.

Almost surely, 2^60021987840 is an apocalyptic number.

60021987840 is a gapful number since it is divisible by the number (60) 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 60021987840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105192111024).

60021987840 is an abundant number, since it is smaller than the sum of its proper divisors (150362234208).

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

60021987840 is a wasteful number, since it uses less digits than its factorization.

60021987840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31499 (or 31480 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 60021987840 in words is "sixty billion, twenty-one million, nine hundred eighty-seven thousand, eight hundred forty".