2651210057242 has 4 divisors (see below), whose sum is σ = 3976815085866. Its totient is φ = 1325605028620.

The previous prime is 2651210057239. The next prime is 2651210057269. The reversal of 2651210057242 is 2427500121562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2570150842561 + 81059214681 = 1603169^2 + 284709^2 .

It is a super-2 number, since 2×2651210057242² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662802514309 + ... + 662802514312.

Almost surely, 2^{2651210057242} is an apocalyptic number.

2651210057242 is a deficient number, since it is larger than the sum of its proper divisors (1325605028624).

2651210057242 is a wasteful number, since it uses less digits than its factorization.

2651210057242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325605028623.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 2651210057242 in words is "two trillion, six hundred fifty-one billion, two hundred ten million, fifty-seven thousand, two hundred forty-two".