20551264701 has 8 divisors (see below), whose sum is σ = 29892748704. Its totient is φ = 12455311920.

The previous prime is 20551264693. The next prime is 20551264757. The reversal of 20551264701 is 10746215502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20551264701 - 2³ = 20551264693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 622765597 = 20551264701 / (2 + 0 + 5 + 5 + 1 + 2 + 6 + 4 + 7 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551264781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311382766 + ... + 311382831.

It is an arithmetic number, because the mean of its divisors is an integer number (3736593588).

Almost surely, 2^20551264701 is an apocalyptic number.

It is an amenable number.

20551264701 is a deficient number, since it is larger than the sum of its proper divisors (9341484003).

20551264701 is a wasteful number, since it uses less digits than its factorization.

20551264701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622765611.

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 20551264701 in words is "twenty billion, five hundred fifty-one million, two hundred sixty-four thousand, seven hundred one".