651621270770 has 8 divisors (see below), whose sum is σ = 1172918287404. Its totient is φ = 260648508304.

The previous prime is 651621270761. The next prime is 651621270791. The reversal of 651621270770 is 77072126156.

It can be written as a sum of positive squares in 2 ways, for example, as 651173144209 + 448126561 = 806953^2 + 21169^2 .

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

It is a super-2 number, since 2×651621270770² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32581063529 + ... + 32581063548.

Almost surely, 2^651621270770 is an apocalyptic number.

651621270770 is a deficient number, since it is larger than the sum of its proper divisors (521297016634).

651621270770 is a wasteful number, since it uses less digits than its factorization.

651621270770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65162127084.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 651621270770 in words is "six hundred fifty-one billion, six hundred twenty-one million, two hundred seventy thousand, seven hundred seventy".