20667152541 has 16 divisors (see below), whose sum is σ = 31545223808. Its totient is φ = 11790144000.

The previous prime is 20667152537. The next prime is 20667152579. The reversal of 20667152541 is 14525176602.

It is not a de Polignac number, because 20667152541 - 2² = 20667152537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20667152541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667153541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806140 + ... + 831381.

It is an arithmetic number, because the mean of its divisors is an integer number (1971576488).

Almost surely, 2^20667152541 is an apocalyptic number.

20667152541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20667152541 is a deficient number, since it is larger than the sum of its proper divisors (10878071267).

20667152541 is a wasteful number, since it uses less digits than its factorization.

20667152541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638132.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 20667152541 in words is "twenty billion, six hundred sixty-seven million, one hundred fifty-two thousand, five hundred forty-one".