20970153951 has 8 divisors (see below), whose sum is σ = 28354011264. Its totient is φ = 13783199640.

The previous prime is 20970153907. The next prime is 20970153977. The reversal of 20970153951 is 15935107902.

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

It is not a de Polignac number, because 20970153951 - 2¹⁰ = 20970152927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20970153901) 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, 49225501 + ... + 49225926.

It is an arithmetic number, because the mean of its divisors is an integer number (3544251408).

Almost surely, 2^20970153951 is an apocalyptic number.

20970153951 is a deficient number, since it is larger than the sum of its proper divisors (7383857313).

20970153951 is an equidigital number, since it uses as much as digits as its factorization.

20970153951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98451501.

The product of its (nonzero) digits is 85050, while the sum is 42.

The spelling of 20970153951 in words is "twenty billion, nine hundred seventy million, one hundred fifty-three thousand, nine hundred fifty-one".