20757515750 has 16 divisors (see below), whose sum is σ = 38858069952. Its totient is φ = 8303006200.

The previous prime is 20757515741. The next prime is 20757515761. The reversal of 20757515750 is 5751575702.

It is a super-2 number, since 2×20757515750² (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, 41514782 + ... + 41515281.

It is an arithmetic number, because the mean of its divisors is an integer number (2428629372).

Almost surely, 2^20757515750 is an apocalyptic number.

20757515750 is a deficient number, since it is larger than the sum of its proper divisors (18100554202).

20757515750 is an equidigital number, since it uses as much as digits as its factorization.

20757515750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83030080 (or 83030070 counting only the distinct ones).

The product of its (nonzero) digits is 428750, while the sum is 44.

The spelling of 20757515750 in words is "twenty billion, seven hundred fifty-seven million, five hundred fifteen thousand, seven hundred fifty".