30257720690040 has 192 divisors, whose sum is σ = 104352347174400. Its totient is φ = 7587099184896.

The previous prime is 30257720690023. The next prime is 30257720690053. The reversal of 30257720690040 is 4009602775203.

30257720690040 is a `hidden beast` number, since 30 + 2 + 577 + 2 + 0 + 6 + 9 + 0 + 0 + 40 = 666.

It is a super-2 number, since 2×30257720690040² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30480244 + ... + 31457283.

It is an arithmetic number, because the mean of its divisors is an integer number (543501808200).

Almost surely, 2^{30257720690040} is an apocalyptic number.

30257720690040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30257720690040 is an abundant number, since it is smaller than the sum of its proper divisors (74094626484360).

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

30257720690040 is a wasteful number, since it uses less digits than its factorization.

30257720690040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61937626 (or 61937619 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 30257720690040 in words is "thirty trillion, two hundred fifty-seven billion, seven hundred twenty million, six hundred ninety thousand, forty".