78145002514 has 4 divisors (see below), whose sum is σ = 117217503774. Its totient is φ = 39072501256.

The previous prime is 78145002499. The next prime is 78145002521. The reversal of 78145002514 is 41520054187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41520054187 = 971 ⋅42760097.

It can be written as a sum of positive squares in only one way, i.e., 77314583025 + 830419489 = 278055^2 + 28817^2 .

It is a super-2 number, since 2×78145002514² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19536250627 + ... + 19536250630.

Almost surely, 2^78145002514 is an apocalyptic number.

78145002514 is a deficient number, since it is larger than the sum of its proper divisors (39072501260).

78145002514 is a wasteful number, since it uses less digits than its factorization.

78145002514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39072501259.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 78145002514 in words is "seventy-eight billion, one hundred forty-five million, two thousand, five hundred fourteen".