20153055040 has 28 divisors (see below), whose sum is σ = 47989463076. Its totient is φ = 8061221888.

The previous prime is 20153055001. The next prime is 20153055049. The reversal of 20153055040 is 4055035102.

It can be written as a sum of positive squares in 2 ways, for example, as 4701570624 + 15451484416 = 68568^2 + 124304^2 .

It is a super-2 number, since 2×20153055040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20153054996 and 20153055014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153055049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31488829 + ... + 31489468.

Almost surely, 2^20153055040 is an apocalyptic number.

20153055040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20153055040 is an abundant number, since it is smaller than the sum of its proper divisors (27836408036).

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

20153055040 is an equidigital number, since it uses as much as digits as its factorization.

20153055040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62978314 (or 62978304 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 20153055040 in words is "twenty billion, one hundred fifty-three million, fifty-five thousand, forty".