61620464676315 has 64 divisors (see below), whose sum is σ = 104904498216960. Its totient is φ = 30798415589760.

The previous prime is 61620464676313. The next prime is 61620464676409. The reversal of 61620464676315 is 51367646402616.

It is a happy number.

61620464676315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61620464676315 - 2¹ = 61620464676313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (61620464676313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25590294 + ... + 27894516.

It is an arithmetic number, because the mean of its divisors is an integer number (1639132784640).

Almost surely, 2^{61620464676315} is an apocalyptic number.

61620464676315 is a deficient number, since it is larger than the sum of its proper divisors (43284033540645).

61620464676315 is a wasteful number, since it uses less digits than its factorization.

61620464676315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305264.

The product of its (nonzero) digits is 26127360, while the sum is 57.

The spelling of 61620464676315 in words is "sixty-one trillion, six hundred twenty billion, four hundred sixty-four million, six hundred seventy-six thousand, three hundred fifteen".