77000073428 has 48 divisors (see below), whose sum is σ = 144850083840. Its totient is φ = 35687333376.

The previous prime is 77000073419. The next prime is 77000073431. The reversal of 77000073428 is 82437000077.

It is a super-2 number, since 2×77000073428² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77000073391 and 77000073400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206701 + ... + 1268907.

It is an arithmetic number, because the mean of its divisors is an integer number (3017710080).

Almost surely, 2^77000073428 is an apocalyptic number.

It is an amenable number.

77000073428 is a deficient number, since it is larger than the sum of its proper divisors (67850010412).

77000073428 is a wasteful number, since it uses less digits than its factorization.

77000073428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62504 (or 62502 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The spelling of 77000073428 in words is "seventy-seven billion, seventy-three thousand, four hundred twenty-eight".