157440470189851 has 2 divisors, whose sum is σ = 157440470189852. Its totient is φ = 157440470189850.

The previous prime is 157440470189801. The next prime is 157440470189857. The reversal of 157440470189851 is 158981074044751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157440470189851 is a prime.

It is a super-2 number, since 2×157440470189851² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157440470189857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78720235094925 + 78720235094926.

It is an arithmetic number, because the mean of its divisors is an integer number (78720235094926).

Almost surely, 2^{157440470189851} is an apocalyptic number.

157440470189851 is a deficient number, since it is larger than the sum of its proper divisors (1).

157440470189851 is an equidigital number, since it uses as much as digits as its factorization.

157440470189851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 64.

The spelling of 157440470189851 in words is "one hundred fifty-seven trillion, four hundred forty billion, four hundred seventy million, one hundred eighty-nine thousand, eight hundred fifty-one".