2645456347551 has 16 divisors (see below), whose sum is σ = 3536151666944. Its totient is φ = 1759201827264.

The previous prime is 2645456347543. The next prime is 2645456347553. The reversal of 2645456347551 is 1557436545462.

It is not a de Polignac number, because 2645456347551 - 2³ = 2645456347543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2645456347491 and 2645456347500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645456347553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3890286 + ... + 4519428.

It is an arithmetic number, because the mean of its divisors is an integer number (221009479184).

Almost surely, 2^{2645456347551} is an apocalyptic number.

2645456347551 is a deficient number, since it is larger than the sum of its proper divisors (890695319393).

2645456347551 is a wasteful number, since it uses less digits than its factorization.

2645456347551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632670.

The product of its digits is 60480000, while the sum is 57.

The spelling of 2645456347551 in words is "two trillion, six hundred forty-five billion, four hundred fifty-six million, three hundred forty-seven thousand, five hundred fifty-one".