20072156507 has 8 divisors (see below), whose sum is σ = 21619254384. Its totient is φ = 18525499488.

The previous prime is 20072156477. The next prime is 20072156527. The reversal of 20072156507 is 70565127002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20072156507 - 2¹⁰ = 20072155483 is a prime.

It is a super-3 number, since 3×20072156507³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20072156527) 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, 12428 + ... + 200745.

It is an arithmetic number, because the mean of its divisors is an integer number (2702406798).

Almost surely, 2^20072156507 is an apocalyptic number.

20072156507 is a deficient number, since it is larger than the sum of its proper divisors (1547097877).

20072156507 is a wasteful number, since it uses less digits than its factorization.

20072156507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220429.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 20072156507 in words is "twenty billion, seventy-two million, one hundred fifty-six thousand, five hundred seven".