2651631155251 has 6 divisors (see below), whose sum is σ = 2871292907940. Its totient is φ = 2447659527768.

The previous prime is 2651631155207. The next prime is 2651631155281. The reversal of 2651631155251 is 1525511361562.

It is a happy number.

It is not a de Polignac number, because 2651631155251 - 2¹³ = 2651631147059 is a prime.

It is a super-2 number, since 2×2651631155251² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2651631155198 and 2651631155207.

It is not an unprimeable number, because it can be changed into a prime (2651631155281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7845062421 + ... + 7845062758.

It is an arithmetic number, because the mean of its divisors is an integer number (478548817990).

Almost surely, 2^{2651631155251} is an apocalyptic number.

2651631155251 is a deficient number, since it is larger than the sum of its proper divisors (219661752689).

2651631155251 is a wasteful number, since it uses less digits than its factorization.

2651631155251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15690125205 (or 15690125192 counting only the distinct ones).

The product of its digits is 270000, while the sum is 43.

The spelling of 2651631155251 in words is "two trillion, six hundred fifty-one billion, six hundred thirty-one million, one hundred fifty-five thousand, two hundred fifty-one".