20401537748 has 12 divisors (see below), whose sum is σ = 35704542720. Its totient is φ = 10200239832.

The previous prime is 20401537693. The next prime is 20401537753. The reversal of 20401537748 is 84773510402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38036 + ... + 205547.

It is an arithmetic number, because the mean of its divisors is an integer number (2975378560).

Almost surely, 2^20401537748 is an apocalyptic number.

It is an amenable number.

20401537748 is a deficient number, since it is larger than the sum of its proper divisors (15303004972).

20401537748 is a wasteful number, since it uses less digits than its factorization.

20401537748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264526 (or 264524 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 20401537748 in words is "twenty billion, four hundred one million, five hundred thirty-seven thousand, seven hundred forty-eight".