156401012461 has 2 divisors, whose sum is σ = 156401012462. Its totient is φ = 156401012460.

The previous prime is 156401012381. The next prime is 156401012519. The reversal of 156401012461 is 164210104651.

156401012461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145671988900 + 10729023561 = 381670^2 + 103581^2 .

It is an emirp because it is prime and its reverse (164210104651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156401012461 - 2¹³ = 156401004269 is a prime.

It is a super-2 number, since 2×156401012461² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156401012561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78200506230 + 78200506231.

It is an arithmetic number, because the mean of its divisors is an integer number (78200506231).

Almost surely, 2^156401012461 is an apocalyptic number.

It is an amenable number.

156401012461 is a deficient number, since it is larger than the sum of its proper divisors (1).

156401012461 is an equidigital number, since it uses as much as digits as its factorization.

156401012461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 156401012461 in words is "one hundred fifty-six billion, four hundred one million, twelve thousand, four hundred sixty-one".