157440470189849 has 24 divisors (see below), whose sum is σ = 199893642249888. Its totient is φ = 122620061571840.

The previous prime is 157440470189801. The next prime is 157440470189851. The reversal of 157440470189849 is 948981074044751.

157440470189849 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 157440470189849 - 2¹² = 157440470185753 is a prime.

It is a super-2 number, since 2×157440470189849² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157440470185849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71321699 + ... + 73496024.

It is an arithmetic number, because the mean of its divisors is an integer number (8328901760412).

Almost surely, 2^{157440470189849} is an apocalyptic number.

It is an amenable number.

157440470189849 is a deficient number, since it is larger than the sum of its proper divisors (42453172060039).

157440470189849 is a wasteful number, since it uses less digits than its factorization.

157440470189849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144819765 (or 144819758 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 71.

The spelling of 157440470189849 in words is "one hundred fifty-seven trillion, four hundred forty billion, four hundred seventy million, one hundred eighty-nine thousand, eight hundred forty-nine".