1615630451951 has 2 divisors, whose sum is σ = 1615630451952. Its totient is φ = 1615630451950.

The previous prime is 1615630451933. The next prime is 1615630451969. The reversal of 1615630451951 is 1591540365161.

It is a balanced prime because it is at equal distance from previous prime (1615630451933) and next prime (1615630451969).

It is a cyclic number.

It is not a de Polignac number, because 1615630451951 - 2⁶ = 1615630451887 is a prime.

It is a super-2 number, since 2×1615630451951² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1615630451896 and 1615630451905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615630451971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807815225975 + 807815225976.

It is an arithmetic number, because the mean of its divisors is an integer number (807815225976).

Almost surely, 2^{1615630451951} is an apocalyptic number.

1615630451951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615630451951 is an equidigital number, since it uses as much as digits as its factorization.

1615630451951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 1615630451951 in words is "one trillion, six hundred fifteen billion, six hundred thirty million, four hundred fifty-one thousand, nine hundred fifty-one".