77243146511245 has 32 divisors (see below), whose sum is σ = 109219767471360. Its totient is φ = 51701664752640.

The previous prime is 77243146511191. The next prime is 77243146511257. The reversal of 77243146511245 is 54211564134277.

It is not a de Polignac number, because 77243146511245 - 2³¹ = 77240999027597 is a prime.

It is a super-2 number, since 2×77243146511245² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77243146511192 and 77243146511201.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 160044465 + ... + 160526374.

It is an arithmetic number, because the mean of its divisors is an integer number (3413117733480).

Almost surely, 2^{77243146511245} is an apocalyptic number.

It is an amenable number.

77243146511245 is a deficient number, since it is larger than the sum of its proper divisors (31976620960115).

77243146511245 is a wasteful number, since it uses less digits than its factorization.

77243146511245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320571205.

The product of its digits is 5644800, while the sum is 52.

The spelling of 77243146511245 in words is "seventy-seven trillion, two hundred forty-three billion, one hundred forty-six million, five hundred eleven thousand, two hundred forty-five".