40251621143600 has 60 divisors (see below), whose sum is σ = 96821172609360. Its totient is φ = 16081226553600.

The previous prime is 40251621143593. The next prime is 40251621143641. The reversal of 40251621143600 is 634112615204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60361436 + ... + 61024635.

It is an arithmetic number, because the mean of its divisors is an integer number (1613686210156).

Almost surely, 2^{40251621143600} is an apocalyptic number.

40251621143600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40251621143600 is an abundant number, since it is smaller than the sum of its proper divisors (56569551465760).

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

40251621143600 is a wasteful number, since it uses less digits than its factorization.

40251621143600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121386918 (or 121386907 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 40251621143600 its reverse (634112615204), we get a palindrome (40885733758804).

The spelling of 40251621143600 in words is "forty trillion, two hundred fifty-one billion, six hundred twenty-one million, one hundred forty-three thousand, six hundred".