20235107648 has 56 divisors (see below), whose sum is σ = 47370699264. Its totient is φ = 8392435200.

The previous prime is 20235107609. The next prime is 20235107671. The reversal of 20235107648 is 84670153202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×20235107648² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714623 + ... + 742398.

It is an arithmetic number, because the mean of its divisors is an integer number (845905344).

Almost surely, 2^20235107648 is an apocalyptic number.

20235107648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20235107648 is an abundant number, since it is smaller than the sum of its proper divisors (27135591616).

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

20235107648 is a wasteful number, since it uses less digits than its factorization.

20235107648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457071 (or 1457061 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20235107648 in words is "twenty billion, two hundred thirty-five million, one hundred seven thousand, six hundred forty-eight".