2151351463557 has 4 divisors (see below), whose sum is σ = 2868468618080. Its totient is φ = 1434234309036.

The previous prime is 2151351463487. The next prime is 2151351463559. The reversal of 2151351463557 is 7553641531512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2151351463557 - 2¹⁸ = 2151351201413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151351463559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358558577257 + ... + 358558577262.

It is an arithmetic number, because the mean of its divisors is an integer number (717117154520).

Almost surely, 2^{2151351463557} is an apocalyptic number.

It is an amenable number.

2151351463557 is a deficient number, since it is larger than the sum of its proper divisors (717117154523).

2151351463557 is an equidigital number, since it uses as much as digits as its factorization.

2151351463557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717117154522.

The product of its digits is 1890000, while the sum is 48.

The spelling of 2151351463557 in words is "two trillion, one hundred fifty-one billion, three hundred fifty-one million, four hundred sixty-three thousand, five hundred fifty-seven".