78553747291402 has 16 divisors (see below), whose sum is σ = 117867726889920. Its totient is φ = 39264505719552.

The previous prime is 78553747291373. The next prime is 78553747291421. The reversal of 78553747291402 is 20419274735587.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241784938 + ... + 242109610.

It is an arithmetic number, because the mean of its divisors is an integer number (7366732930620).

Almost surely, 2^{78553747291402} is an apocalyptic number.

78553747291402 is a deficient number, since it is larger than the sum of its proper divisors (39313979598518).

78553747291402 is a wasteful number, since it uses less digits than its factorization.

78553747291402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362397.

The product of its (nonzero) digits is 118540800, while the sum is 64.

The spelling of 78553747291402 in words is "seventy-eight trillion, five hundred fifty-three billion, seven hundred forty-seven million, two hundred ninety-one thousand, four hundred two".